Summary
Current inbox_count, message_count, thread_count, and storage_bytes. storage_bytes is the UTF-8 byte length of text plus html, plus attachment size_bytes. It is not the message body. Passing inbox_id, or calling with an inbox-scoped key, omits domain_count and workspace_count. An account-wide key also receives those two counts for this account only. A sub-account does not see the parent account or a sibling sub-account. Another account's inbox is 404 inbox_not_found. A key without message_read is 403 permission_denied. MCP: cooper_get_metrics with kind usage.
Query
?inbox_id=inb_…Response
HTTP 200. Sample values illustrate the schema.
{
"inbox_count": 1,
"message_count": 1,
"thread_count": 1,
"storage_bytes": 1
}Errors
- HTTP 404 inbox_not_found
- HTTP 403 permission_denied
Idempotency
This route does not document Idempotency-Key or client_id.